1416892-65-3Relevant articles and documents
Spiro-Bicyclic Bisborane Catalysts for Metal-Free Chemoselective and Enantioselective Hydrogenation of Quinolines
Li, Xiang,Tian, Jun-Jie,Liu, Ning,Tu, Xian-Shuang,Zeng, Ning-Ning,Wang, Xiao-Chen
, p. 4664 - 4668 (2019)
A new series of spiro-bicyclic bisborane catalysts has been prepared by means of hydroboration reactions of C2-symmetric spiro-bicyclic dienes with HB(C6F5)2 and HB(p-C6F4H)2. When used for hydrogenation of quinolines, these catalysts give excellent yields and enantiomeric excesses, and show turnover numbers of up to 460. The most attractive feature of these metal-free hydrogenation reactions was the broad functional-group tolerance, making this method complementary to existing methods for quinoline hydrogenation.
Enantioselective cooperative triple catalysis: Unique roles of Au(i)/amine/chiral Bronsted acid catalysts in the addition/ cycloisomerization/transfer hydrogenation cascade
Patil, Nitin T.,Raut, Vivek S.,Tella, Ramesh Babu
supporting information, p. 570 - 572 (2013/02/22)
An enantioselective cooperative process involving the concerted/ simultaneous action of three different catalysts i.e. Au(i)/amine/chiral Bronsted acid catalysts has been realized for the synthesis of 2-substituted tetrahydroquinolines from 2-aminobenzaldehydes and terminal alkynes.